Electrical and Electronics assignment help

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Advanced Circuit Techniques

Advanced circuit techniques includes analog-to-digital converters, digital-to-analog converters. It also includes power converters, phase-locked loops and the oscillators. An analog-to-digital converter, or ADC is a device that is used to convert analog signals into digital signals and analog information is transmitted by modulating a continuous transmission signal by amplifying a signal's strength. This is also done by varying its frequency to add or take away data. Whereas the digital information describes any system based on discontinuous data or events and computers which handle data in digital form and it requires analog-to-digital converters to turn signals from analog to digital before it can be read.

 

Advanced Circuit Techniques Assignment Help

A digital-to-analog converter (DAC or D-to-A) is a device that converts a digital code to an analog sig or an electric charge. Here the signals are easily stored and transmitted in digital form, but a DAC is required for the signal to be recognized by human or other non-digital systems. A power converter is an electrical or Electro-mechanical device for converting electrical energy which is very similar to a transformer that change the voltage of Alternating current power. This is a device which is used to convert one utility frequency of Alternating current into another frequency and this kind of power conversion systems often incorporate redundancy and voltage regulation.

A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose Phase is related to the phase of an input "reference" signal. This is an electronic circuit consisting of a variable frequency electronic oscillator and a phase detector and this circuit compares the phase of the input signal with the phase of the signal derived from its output oscillator. It adjusts the frequency of its oscillator to keep the phases matched and the signal from the phase detector is used to control the oscillator in a feedback loop.

Frequency is the time derivative of phase which keeps the input and output phase in lock step implies keeping the input and output frequencies in lock step. It is also used to track an input frequency, or it is used to generate a frequency that is a multiple of the input frequency and the former property is used for demodulation and the latter property is used for indirect frequency synthesis. An electronic oscillator is an electronic circuit that produces a repetitive, oscillation electronic signal that is a Sine wave and this is used to convert direct current (DC) from a power supply to an alternating current signal. It is widely used in many electronic devices such as transmitters, clock signals that regulate computers, electronic beepers and even in video games.